100
Appendix
Standard schemes
Scheme
Boiler group
Distribution group
1
Single boiler or cascade
One direct zone
Name and Description
ECU I/O
Note
Boiler flow sensor
NTC1
Boiler return sensor
NTC2
Outdoor sensor
NTC4
Boiler pump (230 V)
P1
Boiler pump (PWM)
PWM_P1
Common flow sensor (T10)
MTS1
HC1 pump
MO1_HV
Pumps managed in parallel
System pump*
MO1_HV
Heat request zone 1
PADIN1 or EBUS2
Alarm or sanitary pump
VFR1
Optional
LPG/ Room supply Fan
VFR3
*System pump: optional electrical connection. To use depending on application.